Hydro-Vac Excavating:

SWET Inc.'s Hydro-Vac excavating is based on a combination of water-blasting and vacuum power to provide non-destructive excavating of buried pipes, lines and other structures.  Water from the Hydro-Vac is pressurized and delivered through a handheld wand to loosen the soil.  The resulting slurry (composed of water and earth) is sucked up in a debris hose by the powerful vacuum system and stored in the vehicle's debris tank.  A visual observation of the buried underground structure can now be accomplished and the pipes, lines or other structures identified and repairs completed.